Changes between Initial Version and Version 1 of CernSummerSchool

Timestamp:

Mar 20, 2012, 4:16:10 PM (14 years ago)

Author:

trac

Comment:

--

CernSummerSchool

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+== 2007 CERN Summer student workshop  ==
+
+=== Exercises ===
+Discover the Higgs at the LHC:
+   * Find the best prediction for Higgs production at the LHC [http://maltoni.web.cern.ch/maltoni/TeV4LHC/index.html here].
+   * Find the Higgs branching ratios [attachment:h-br.pdf here]. 
+
+Choose a channel and investigate signal and background:
+
+   1. The 4 lepton final state: %$pp \to H\to Z Z \to e^+e^- \mu^+ \mu^-$%
+      * Signal 
+         * Events:  [attachment:h4l-signal.lhe.gz Parton Level] [attachment:h4l-signal.lhco.gz Detector Level] 
+         * Plots: [attachment:h4l-signal-lhe.pdf Parton Level] [attachment:h4l-signal-lhco.pdf Detector Level] 
+      * Background 
+         * Events:  [attachment:h4l.lhe.gz Parton Level] [attachment:h4l.lhco.gz Detector Level] 
+         * Plots: [attachment:h4l-lhe.pdf Parton Level] [attachment:h4l-lhco.pdf Detector Level] 
+   1. The 2 lepton + missing Et final state: %$pp \to H\to W^+ W^- \to e^- \bar \nu_e \mu^+ \nu_\mu $%
+      * Signal 
+         * Events:  [attachment:hww-signal.lhe.gz Parton Level] [attachment:hww-signal.lhco.gz Detector Level] 
+         * Plots: [attachment:hww-signal-lhe.pdf Parton Level] [attachment:hww-signal-lhco.pdf Detector Level] 
+      * Background 
+         * Events:  [attachment:hww-background.lhe.gz Parton Level] [attachment:h4l-background.lhco.gz Detector Level] 
+         * Plots: [attachment:h4l-background-lhe.pdf Parton Level] [attachment:h4l-background-lhco.pdf Detector Level] 
+   1. Top associated production %$pp \to t\bar tH$% with %$H \to b \bar b$%
+      *  Signal + Background samples:
+         * Events:  [attachment:ttbb.lhe.gz Parton Level] [attachment:ttbb.lhco.gz Detector Level] 
+         * Plots: [attachment:ttbb-lhe.pdf Parton Level] [attachment:ttbb-lhco.pdf Detector Level] 
+
+=== The Challenge ===
+
+Three "black boxes" are given, in the form of event files in the LHC Olympics format and a series of selected plots:
+
+   * Box A : [attachment:A.lhco.gz Events]  Plots:  [attachment:A-lhe.pdf Parton level]  [attachment:A.pdf Detector level]
+   * Box B : [attachment:B.lhco.gz Events]   Plots:  [attachment:B-lhe.pdf Parton level]   [attachment:B.pdf Detector level]
+   * Box C : [attachment:C.lhco.gz Events]  Plots:  [attachment:C-lhe.pdf Parton lelve]   [attachment:C.pdf Detector level]
+
+Black boxes contain only signal events. The students are asked to pair up the boxes above with the following models and also answer to the questions:
+
+   * Model 1 : Extra Z (zp) : What its mass? Does it have Standard Model couplings to fermions? 
+   * Model 2 : Heavy Scalar (h): What its mass?  Is it a SM Higgs?
+   * Model 3 : Extra W (wp+ or wp-) : What its mass? Does it have Standard Model couplings to fermions? 
+ 
+Useful extra information:
+   * In the plots %$H_T=\sum ||p_T^{vis}|| + E_T^{miss}$%.
+   * A SM-like  Z' would decay (more or less democratically) into: jet jet (uu~,cc~,dd~,ss~,bb~), t tbar (tt~), lept+lept- (e+e-,mu+mu-,ta+ta-), neutrino anti-neutrino (ve ve~,vm vm~,vt vt~). It could also have couplings to SM W and Z, and in that case would decay in to ZZ and W+W-.
+   * An Higgs couple to particles with a strength which is proportional to the particle masses. A SM-like  heavy H would decay in to t tbar (tt~), W+W-, ZZ.   
+   * A SM-like  W'+ would decay into: jet jet (ud~,cs~), t b (tb~), lept neutrino (e+ ve , mu+ vm, ta+ vt). It could also have couplings to SM W and Z, and in that case would decay in to ZW.
+
+  
+-- Main.FabioMaltoni - 08 Aug 2007
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